Philadelphia -LRB- CNN -RRB- -- A singer is being sought for questioning in connection with the death of a woman following a cosmetic procedure , police said Friday .

Claudia Aderotimi , 20 , died early Tuesday , shortly after receiving buttocks enhancements in a hotel room near Philadelphia International Airport , according to police . The procedure allegedly cost $ 1,800 .

Police say singer Black Madam -- whom they have identified as Padge Victoria Windslowe , 41 -- is believed to be the person who injected Aderotimi with a substance that was supposed to be silicone .

Officers searched Windslowe 's apartment for medical supplies , according to a search warrant . She was not home at the time , and authorities are looking for her .

Aderotimi and three other women had traveled from England to undergo the cosmetic procedure in Philadelphia , police said .

A woman who allegedly helped arrange the trip told police that `` Black Madam '' carried out the procedure , according to an affidavit .

Shortly after the injection , Aderotimi became short of breath and complained of chest pains . She was rushed to a hospital , where she later died , police said .

The preliminary cause of death has been linked to the injection , according to the affidavit .

Underground cosmetic procedures have become a growing cause of concern for health regulators .

Last month , New York officials arrested a woman for allegedly illegally injecting liquid silicone as part an underground business she ran out of her home , according to the Manhattan U.S. attorney 's office .

She allegedly charged more than $ 1,000 for a round of shots and faces up to three years in prison if convicted .

Last year in New Jersey , state health officials launched an investigation into infections related to cosmetic injections after six women were hospitalized for complications .

The women developed symptoms after injections for buttocks enhancement and received surgical and antibiotic treatment , according to the state health agency . All the injections apparently were administered by unlicensed medical providers .

Investigators have had a difficult time tracking these procedures because they are performed by unlicensed providers .

`` It 's hard to tell how many people are utilizing that -LSB- type -RSB- of service , '' said Dr. Tina Tan , a New Jersey state epidemiologist .

Tan has heard reports of caulk and other products being used in the injections , as well as injection substances being purchased outside of medical supply stores , she said .

Not surprisingly , injecting these materials can result in serious health complications and death , she warned .

`` In our cluster , these patients had to be hospitalized , '' she said , adding that injection procedures should be performed by licensed health providers . `` We do not recommend going in a hotel room with people who you do n't know their credentials . ''

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A 20-year-old woman died this week after a cosmetic injection

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Police want to talk to singer Black Madam , whom they have linked to the procedure

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Police have already searched the singer 's house